On May 9, the new nano-filter material mask product developed by GZDH fluoroplastic material technology group was officially released. According to reports, the pore size of the nano-mask is 1-100 nanometers, which is thinner than ordinary human hair. The bacterial filtration efficiency can reach more than 98%, and the particulate filtration efficiency can reach more than 96%. Due to the use of a new type of nano-membrane as a filter material, this type of mask can be immersed in warm water for disinfection and repeated use, and the duration of use can reach more than 200 hours.
Masks can be used again after soaking and drying
According to reports, this mass-produced nano mask product is designed with a three-layer structure. The outer layer is composed of non-woven fabric materials to prevent the infiltration of mist and water vapor; the middle is made of a layer of PTFE nano-composite filter material as the main protective layer. The adsorption and blocking of the finest particles in the middle; the inner layer is composed of skin-friendly non-woven fabric, which is soft and does not hurt the skin.
"The core material of our nano masks is the PTFE nano membrane, its pore size is smaller than that of human hair. The nano filter membrane is used as a protective layer, and the fiber diameter is only a few tens of nanometers. The principle of physical isolation is directly used. The particles are all blocked. "The relevant person in charge of the company showed the reporter that the nano-membrane used to make the nano mask filter material is the same as the plastic wrap, but it is thinner than the plastic wrap, and you can't feel the thickness by touching it with your hands. Visual inspection, completely transparent.
At present, most protective masks using melt-blown non-woven fabrics on the market, the mechanism of filtering PM2.5 and viruses is electrostatic adsorption. Once the mask is wet, the filtering function is invalid, so it needs to be replaced every 4 hours, and the service life is short. . Nano-membrane material is used as mask filter material, its effect is better than melt-blown cloth, and it can be used repeatedly. As long as it is worn, soak it in warm water at 65-68 ° C (not rub it by hand) for 10 minutes, or evenly spread it on the surface of the mask with 75% alcohol, and then wait for the mask to dry naturally before it can be used again.
The filtration efficiency of masks made with this material reaches more than 99% (N95, KN95 mask level), and the resistance of exhalation and inhalation is far below the standard limit, which can effectively achieve breathability and impermeability, filter PM2.5, resist microorganisms and Good effect of bacteria entering the human body. At present, this new type of mask has passed the test and safe use test of the national standard GB / T 32610-2016 "Technical Specifications for Daily Protective Masks" and the medical industry standard YY / T 0969-2013 "Disposable Medical Masks. Existing test data shows that after 15 times of hot water rinsing, the filtration efficiency and ventilation resistance of these masks have not changed, and they can be reused for more than 200 hours.